/**
 * User: Jinqn
 * Date: 14-04-08
 * Time: 下午16:34
 * 上传图片对话框逻辑代码,包括tab: 远程图片/上传图片/在线图片/搜索图片
 */

(function () {
  var uploadFile, onlineFile;

  window.onload = function () {
    initTabs();
    initButtons();
  };

  /* 初始化tab标签 */
  function initTabs() {
    var tabs = $G("tabhead").children;
    for (var i = 0; i < tabs.length; i++) {
      domUtils.on(tabs[i], "click", function (e) {
        var target = e.target || e.srcElement;
        setTabFocus(target.getAttribute("data-content-id"));
      });
    }

    setTabFocus("upload");
  }

  /* 初始化tabbody */
  function setTabFocus(id) {
    if (!id) return;
    var i,
      bodyId,
      tabs = $G("tabhead").children;
    for (i = 0; i < tabs.length; i++) {
      bodyId = tabs[i].getAttribute("data-content-id");
      if (bodyId == id) {
        domUtils.addClass(tabs[i], "focus");
        domUtils.addClass($G(bodyId), "focus");
      } else {
        domUtils.removeClasses(tabs[i], "focus");
        domUtils.removeClasses($G(bodyId), "focus");
      }
    }
    switch (id) {
      case "upload":
        uploadFile = uploadFile || new UploadFile("queueList");
        break;
      case "online":
        onlineFile = onlineFile || new OnlineFile("fileList");
        break;
    }
  }

  /* 初始化onok事件 */
  function initButtons() {
    dialog.onok = function () {
      var list = [],
        id,
        tabs = $G("tabhead").children;
      for (var i = 0; i < tabs.length; i++) {
        if (domUtils.hasClass(tabs[i], "focus")) {
          id = tabs[i].getAttribute("data-content-id");
          break;
        }
      }

      switch (id) {
        case "upload":
          list = uploadFile.getInsertList();
          var count = uploadFile.getQueueCount();
          if (count) {
            $(".info", "#queueList").html(
              '<span style="color:red;">' +
                "还有2个未上传文件".replace(/[\d]/, count) +
                "</span>"
            );
            return false;
          }
          break;
        case "online":
          list = onlineFile.getInsertList();
          break;
      }

      editor.execCommand("insertfile", list);
    };
  }

  /* 上传附件 */
  function UploadFile(target) {
    this.$wrap = target.constructor == String ? $("#" + target) : $(target);
    this.init();
  }
  UploadFile.prototype = {
    init: function () {
      this.fileList = [];
      this.initContainer();
      this.initUploader();
    },
    initContainer: function () {
      this.$queue = this.$wrap.find(".filelist");
    },
    /* 初始化容器 */
    initUploader: function () {
      var _this = this,
        $ = jQuery, // just in case. Make sure it's not an other libaray.
        $wrap = _this.$wrap,
        // 图片容器
        $queue = $wrap.find(".filelist"),
        // 状态栏，包括进度和控制按钮
        $statusBar = $wrap.find(".statusBar"),
        // 文件总体选择信息。
        $info = $statusBar.find(".info"),
        // 上传按钮
        $upload = $wrap.find(".uploadBtn"),
        // 上传按钮
        $filePickerBtn = $wrap.find(".filePickerBtn"),
        // 上传按钮
        $filePickerBlock = $wrap.find(".filePickerBlock"),
        // 没选择文件之前的内容。
        $placeHolder = $wrap.find(".placeholder"),
        // 总体进度条
        $progress = $statusBar.find(".progress").hide(),
        // 添加的文件数量
        fileCount = 0,
        // 添加的文件总大小
        fileSize = 0,
        // 优化retina, 在retina下这个值是2
        ratio = window.devicePixelRatio || 1,
        // 缩略图大小
        thumbnailWidth = 113 * ratio,
        thumbnailHeight = 113 * ratio,
        // 可能有pedding, ready, uploading, confirm, done.
        state = "",
        // 所有文件的进度信息，key为file id
        percentages = {},
        supportTransition = (function () {
          var s = document.createElement("p").style,
            r =
              "transition" in s ||
              "WebkitTransition" in s ||
              "MozTransition" in s ||
              "msTransition" in s ||
              "OTransition" in s;
          s = null;
          return r;
        })(),
        // WebUploader实例
        uploader,
        actionUrl = editor.getActionUrl(editor.getOpt("fileActionName")),
        fileMaxSize = editor.getOpt("fileMaxSize"),
        acceptExtensions = (editor.getOpt("fileAllowFiles") || [])
          .join("")
          .replace(/\./g, ",")
          .replace(/^[,]/, "");

      if (!WebUploader.Uploader.support()) {
        $("#filePickerReady")
          .after($("<div>").html(lang.errorNotSupport))
          .hide();
        return;
      } else if (!editor.getOpt("fileActionName")) {
        $("#filePickerReady")
          .after($("<div>").html(lang.errorLoadConfig))
          .hide();
        return;
      }
      uploader = _this.uploader = WebUploader.create({
        pick: {
          id: "#filePickerReady",
          label: lang.uploadSelectFile,
        },
        swf: "../../third-party/webuploader/Uploader.swf",
        server: actionUrl,
        fileVal: editor.getOpt("fileFieldName"),
        duplicate: true,
        fileSingleSizeLimit: fileMaxSize,
        compress: false,
      });
      uploader.addButton({
        id: "#filePickerBlock",
      });
      uploader.addButton({
        id: "#filePickerBtn",
        label: lang.uploadAddFile,
      });

      setState("pedding");

      // 当有文件添加进来时执行，负责view的创建
      function addFile(file) {
        var $li = $(
            '<li id="' +
              file.id +
              '">' +
              '<p class="title">' +
              file.name +
              "</p>" +
              '<p class="imgWrap"></p>' +
              '<p class="progress"><span></span></p>' +
              "</li>"
          ),
          $btns = $(
            '<div class="file-panel">' +
              '<span class="cancel">' +
              lang.uploadDelete +
              "</span>" +
              '<span class="rotateRight">' +
              lang.uploadTurnRight +
              "</span>" +
              '<span class="rotateLeft">' +
              lang.uploadTurnLeft +
              "</span></div>"
          ).appendTo($li),
          $prgress = $li.find("p.progress span"),
          $wrap = $li.find("p.imgWrap"),
          $info = $('<p class="error"></p>').hide().appendTo($li),
          showError = function (code) {
            switch (code) {
              case "exceed_size":
                text = lang.errorExceedSize;
                break;
              case "interrupt":
                text = lang.errorInterrupt;
                break;
              case "http":
                text = lang.errorHttp;
                break;
              case "not_allow_type":
                text = lang.errorFileType;
                break;
              default:
                text = lang.errorUploadRetry;
                break;
            }
            $info.text(text).show();
          };

        if (file.getStatus() === "invalid") {
          showError(file.statusText);
        } else {
          $wrap.text(lang.uploadPreview);
          if (
            "|png|jpg|jpeg|bmp|gif|".indexOf(
              "|" + file.ext.toLowerCase() + "|"
            ) == -1
          ) {
            $wrap
              .empty()
              .addClass("notimage")
              .append(
                '<i class="file-preview file-type-' +
                  file.ext.toLowerCase() +
                  '"></i>' +
                  '<span class="file-title" title="' +
                  file.name +
                  '">' +
                  file.name +
                  "</span>"
              );
          } else {
            if (browser.ie && browser.version <= 7) {
              $wrap.text(lang.uploadNoPreview);
            } else {
              uploader.makeThumb(
                file,
                function (error, src) {
                  if (error || !src) {
                    $wrap.text(lang.uploadNoPreview);
                  } else {
                    var $img = $('<img src="' + src + '">');
                    $wrap.empty().append($img);
                    $img.on("error", function () {
                      $wrap.text(lang.uploadNoPreview);
                    });
                  }
                },
                thumbnailWidth,
                thumbnailHeight
              );
            }
          }
          percentages[file.id] = [file.size, 0];
          file.rotation = 0;

          /* 检查文件格式 */
          if (
            !file.ext ||
            acceptExtensions.indexOf(file.ext.toLowerCase()) == -1
          ) {
            showError("not_allow_type");
            uploader.removeFile(file);
          }
        }

        file.on("statuschange", function (cur, prev) {
          if (prev === "progress") {
            $prgress.hide().width(0);
          } else if (prev === "queued") {
            $li.off("mouseenter mouseleave");
            $btns.remove();
          }
          // 成功
          if (cur === "error" || cur === "invalid") {
            showError(file.statusText);
            percentages[file.id][1] = 1;
          } else if (cur === "interrupt") {
            showError("interrupt");
          } else if (cur === "queued") {
            percentages[file.id][1] = 0;
          } else if (cur === "progress") {
            $info.hide();
            $prgress.css("display", "block");
          } else if (cur === "complete") {
          }

          $li.removeClass("state-" + prev).addClass("state-" + cur);
        });

        $li.on("mouseenter", function () {
          $btns.stop().animate({ height: 30 });
        });
        $li.on("mouseleave", function () {
          $btns.stop().animate({ height: 0 });
        });

        $btns.on("click", "span", function () {
          var index = $(this).index(),
            deg;

          switch (index) {
            case 0:
              uploader.removeFile(file);
              return;
            case 1:
              file.rotation += 90;
              break;
            case 2:
              file.rotation -= 90;
              break;
          }

          if (supportTransition) {
            deg = "rotate(" + file.rotation + "deg)";
            $wrap.css({
              "-webkit-transform": deg,
              "-mos-transform": deg,
              "-o-transform": deg,
              transform: deg,
            });
          } else {
            $wrap.css(
              "filter",
              "progid:DXImageTransform.Microsoft.BasicImage(rotation=" +
                (~~(((file.rotation / 90) % 4) + 4) % 4) +
                ")"
            );
          }
        });

        $li.insertBefore($filePickerBlock);
      }

      // 负责view的销毁
      function removeFile(file) {
        var $li = $("#" + file.id);
        delete percentages[file.id];
        updateTotalProgress();
        $li.off().find(".file-panel").off().end().remove();
      }

      function updateTotalProgress() {
        var loaded = 0,
          total = 0,
          spans = $progress.children(),
          percent;

        $.each(percentages, function (k, v) {
          total += v[0];
          loaded += v[0] * v[1];
        });

        percent = total ? loaded / total : 0;

        spans.eq(0).text(Math.round(percent * 100) + "%");
        spans.eq(1).css("width", Math.round(percent * 100) + "%");
        updateStatus();
      }

      function setState(val, files) {
        if (val != state) {
          var stats = uploader.getStats();

          $upload.removeClass("state-" + state);
          $upload.addClass("state-" + val);

          switch (val) {
            /* 未选择文件 */
            case "pedding":
              $queue.addClass("element-invisible");
              $statusBar.addClass("element-invisible");
              $placeHolder.removeClass("element-invisible");
              $progress.hide();
              $info.hide();
              uploader.refresh();
              break;

            /* 可以开始上传 */
            case "ready":
              $placeHolder.addClass("element-invisible");
              $queue.removeClass("element-invisible");
              $statusBar.removeClass("element-invisible");
              $progress.hide();
              $info.show();
              $upload.text(lang.uploadStart);
              uploader.refresh();
              break;

            /* 上传中 */
            case "uploading":
              $progress.show();
              $info.hide();
              $upload.text(lang.uploadPause);
              break;

            /* 暂停上传 */
            case "paused":
              $progress.show();
              $info.hide();
              $upload.text(lang.uploadContinue);
              break;

            case "confirm":
              $progress.show();
              $info.hide();
              $upload.text(lang.uploadStart);

              stats = uploader.getStats();
              if (stats.successNum && !stats.uploadFailNum) {
                setState("finish");
                return;
              }
              break;

            case "finish":
              $progress.hide();
              $info.show();
              if (stats.uploadFailNum) {
                $upload.text(lang.uploadRetry);
              } else {
                $upload.text(lang.uploadStart);
              }
              break;
          }

          state = val;
          updateStatus();
        }

        if (!_this.getQueueCount()) {
          $upload.addClass("disabled");
        } else {
          $upload.removeClass("disabled");
        }
      }

      function updateStatus() {
        var text = "",
          stats;

        if (state === "ready") {
          text = lang.updateStatusReady
            .replace("_", fileCount)
            .replace("_KB", WebUploader.formatSize(fileSize));
        } else if (state === "confirm") {
          stats = uploader.getStats();
          if (stats.uploadFailNum) {
            text = lang.updateStatusConfirm
              .replace("_", stats.successNum)
              .replace("_", stats.successNum);
          }
        } else {
          stats = uploader.getStats();
          text = lang.updateStatusFinish
            .replace("_", fileCount)
            .replace("_KB", WebUploader.formatSize(fileSize))
            .replace("_", stats.successNum);

          if (stats.uploadFailNum) {
            text += lang.updateStatusError.replace("_", stats.uploadFailNum);
          }
        }

        $info.html(text);
      }

      uploader.on("fileQueued", function (file) {
        fileCount++;
        fileSize += file.size;

        if (fileCount === 1) {
          $placeHolder.addClass("element-invisible");
          $statusBar.show();
        }

        addFile(file);
      });

      uploader.on("fileDequeued", function (file) {
        fileCount--;
        fileSize -= file.size;

        removeFile(file);
        updateTotalProgress();
      });

      uploader.on("filesQueued", function (file) {
        if (
          !uploader.isInProgress() &&
          (state == "pedding" ||
            state == "finish" ||
            state == "confirm" ||
            state == "ready")
        ) {
          setState("ready");
        }
        updateTotalProgress();
      });

      uploader.on("all", function (type, files) {
        switch (type) {
          case "uploadFinished":
            setState("confirm", files);
            break;
          case "startUpload":
            /* 添加额外的GET参数 */
            var params =
                utils.serializeParam(editor.queryCommandValue("serverparam")) ||
                "",
              url = utils.formatUrl(
                actionUrl +
                  (actionUrl.indexOf("?") == -1 ? "?" : "&") +
                  "encode=utf-8&" +
                  params
              );
            uploader.option("server", url);
            setState("uploading", files);
            break;
          case "stopUpload":
            setState("paused", files);
            break;
        }
      });

      uploader.on("uploadBeforeSend", function (file, data, header) {
        //这里可以通过data对象添加POST参数
        header["X_Requested_With"] = "XMLHttpRequest";
      });

      uploader.on("uploadProgress", function (file, percentage) {
        var $li = $("#" + file.id),
          $percent = $li.find(".progress span");

        $percent.css("width", percentage * 100 + "%");
        percentages[file.id][1] = percentage;
        updateTotalProgress();
      });

      uploader.on("uploadSuccess", function (file, ret) {
        var $file = $("#" + file.id);
        try {
          var responseText = ret._raw || ret,
            json = utils.str2json(responseText);
          if (json.state == "SUCCESS") {
            _this.fileList.push(json);
            $file.append('<span class="success"></span>');
          } else {
            $file.find(".error").text(json.state).show();
          }
        } catch (e) {
          $file.find(".error").text(lang.errorServerUpload).show();
        }
      });

      uploader.on("uploadError", function (file, code) {});
      uploader.on("error", function (code, file) {
        if (code == "Q_TYPE_DENIED" || code == "F_EXCEED_SIZE") {
          addFile(file);
        }
      });
      uploader.on("uploadComplete", function (file, ret) {});

      $upload.on("click", function () {
        if ($(this).hasClass("disabled")) {
          return false;
        }

        if (state === "ready") {
          uploader.upload();
        } else if (state === "paused") {
          uploader.upload();
        } else if (state === "uploading") {
          uploader.stop();
        }
      });

      $upload.addClass("state-" + state);
      updateTotalProgress();
    },
    getQueueCount: function () {
      var file,
        i,
        status,
        readyFile = 0,
        files = this.uploader.getFiles();
      for (i = 0; (file = files[i++]); ) {
        status = file.getStatus();
        if (status == "queued" || status == "uploading" || status == "progress")
          readyFile++;
      }
      return readyFile;
    },
    getInsertList: function () {
      var i,
        link,
        data,
        list = [],
        prefix = editor.getOpt("fileUrlPrefix");
      for (i = 0; i < this.fileList.length; i++) {
        data = this.fileList[i];
        link = data.url;
        list.push({
          title: data.original || link.substr(link.lastIndexOf("/") + 1),
          url: prefix + link,
        });
      }
      return list;
    },
  };

  /* 在线附件 */
  function OnlineFile(target) {
    this.container = utils.isString(target)
      ? document.getElementById(target)
      : target;
    this.init();
  }
  OnlineFile.prototype = {
    init: function () {
      this.initContainer();
      this.initEvents();
      this.initData();
    },
    /* 初始化容器 */
    initContainer: function () {
      this.container.innerHTML = "";
      this.list = document.createElement("ul");
      this.clearFloat = document.createElement("li");

      domUtils.addClass(this.list, "list");
      domUtils.addClass(this.clearFloat, "clearFloat");

      this.list.appendChild(this.clearFloat);
      this.container.appendChild(this.list);
    },
    /* 初始化滚动事件,滚动到地步自动拉取数据 */
    initEvents: function () {
      var _this = this;

      /* 滚动拉取图片 */
      domUtils.on($G("fileList"), "scroll", function (e) {
        var panel = this;
        if (panel.scrollHeight - (panel.offsetHeight + panel.scrollTop) < 10) {
          _this.getFileData();
        }
      });
      /* 选中图片 */
      domUtils.on(this.list, "click", function (e) {
        var target = e.target || e.srcElement,
          li = target.parentNode;

        if (li.tagName.toLowerCase() == "li") {
          if (domUtils.hasClass(li, "selected")) {
            domUtils.removeClasses(li, "selected");
          } else {
            domUtils.addClass(li, "selected");
          }
        }
      });
    },
    /* 初始化第一次的数据 */
    initData: function () {
      /* 拉取数据需要使用的值 */
      this.state = 0;
      this.listSize = editor.getOpt("fileManagerListSize");
      this.listIndex = 0;
      this.listEnd = false;

      /* 第一次拉取数据 */
      this.getFileData();
    },
    /* 向后台拉取图片列表数据 */
    getFileData: function () {
      var _this = this;

      if (!_this.listEnd && !this.isLoadingData) {
        this.isLoadingData = true;
        ajax.request(
          editor.getActionUrl(editor.getOpt("fileManagerActionName")),
          {
            timeout: 100000,
            data: utils.extend(
              {
                start: this.listIndex,
                size: this.listSize,
              },
              editor.queryCommandValue("serverparam")
            ),
            method: "get",
            onsuccess: function (r) {
              try {
                var json = eval("(" + r.responseText + ")");
                if (json.state == "SUCCESS") {
                  _this.pushData(json.list);
                  _this.listIndex =
                    parseInt(json.start) + parseInt(json.list.length);
                  if (_this.listIndex >= json.total) {
                    _this.listEnd = true;
                  }
                  _this.isLoadingData = false;
                }
              } catch (e) {
                if (r.responseText.indexOf("ue_separate_ue") != -1) {
                  var list = r.responseText.split(r.responseText);
                  _this.pushData(list);
                  _this.listIndex = parseInt(list.length);
                  _this.listEnd = true;
                  _this.isLoadingData = false;
                }
              }
            },
            onerror: function () {
              _this.isLoadingData = false;
            },
          }
        );
      }
    },
    /* 添加图片到列表界面上 */
    pushData: function (list) {
      var i,
        item,
        img,
        filetype,
        preview,
        icon,
        _this = this,
        urlPrefix = editor.getOpt("fileManagerUrlPrefix");
      for (i = 0; i < list.length; i++) {
        if (list[i] && list[i].url) {
          item = document.createElement("li");
          icon = document.createElement("span");
          filetype = list[i].url.substr(list[i].url.lastIndexOf(".") + 1);

          if ("png|jpg|jpeg|gif|bmp".indexOf(filetype) != -1) {
            preview = document.createElement("img");
            domUtils.on(
              preview,
              "load",
              (function (image) {
                return function () {
                  _this.scale(
                    image,
                    image.parentNode.offsetWidth,
                    image.parentNode.offsetHeight
                  );
                };
              })(preview)
            );
            preview.width = 113;
            preview.setAttribute(
              "src",
              urlPrefix +
                list[i].url +
                (list[i].url.indexOf("?") == -1 ? "?noCache=" : "&noCache=") +
                (+new Date()).toString(36)
            );
          } else {
            var ic = document.createElement("i"),
              textSpan = document.createElement("span");
            textSpan.innerHTML = list[i].url.substr(
              list[i].url.lastIndexOf("/") + 1
            );
            preview = document.createElement("div");
            preview.appendChild(ic);
            preview.appendChild(textSpan);
            domUtils.addClass(preview, "file-wrapper");
            domUtils.addClass(textSpan, "file-title");
            domUtils.addClass(ic, "file-type-" + filetype);
            domUtils.addClass(ic, "file-preview");
          }
          domUtils.addClass(icon, "icon");
          item.setAttribute("data-url", urlPrefix + list[i].url);
          if (list[i].original) {
            item.setAttribute("data-title", list[i].original);
          }

          item.appendChild(preview);
          item.appendChild(icon);
          this.list.insertBefore(item, this.clearFloat);
        }
      }
    },
    /* 改变图片大小 */
    scale: function (img, w, h, type) {
      var ow = img.width,
        oh = img.height;

      if (type == "justify") {
        if (ow >= oh) {
          img.width = w;
          img.height = (h * oh) / ow;
          img.style.marginLeft = "-" + parseInt((img.width - w) / 2) + "px";
        } else {
          img.width = (w * ow) / oh;
          img.height = h;
          img.style.marginTop = "-" + parseInt((img.height - h) / 2) + "px";
        }
      } else {
        if (ow >= oh) {
          img.width = (w * ow) / oh;
          img.height = h;
          img.style.marginLeft = "-" + parseInt((img.width - w) / 2) + "px";
        } else {
          img.width = w;
          img.height = (h * oh) / ow;
          img.style.marginTop = "-" + parseInt((img.height - h) / 2) + "px";
        }
      }
    },
    getInsertList: function () {
      var i,
        lis = this.list.children,
        list = [];
      for (i = 0; i < lis.length; i++) {
        if (domUtils.hasClass(lis[i], "selected")) {
          var url = lis[i].getAttribute("data-url");
          var title =
            lis[i].getAttribute("data-title") ||
            url.substr(url.lastIndexOf("/") + 1);
          list.push({
            title: title,
            url: url,
          });
        }
      }
      return list;
    },
  };
})();
